Bell Task 1. Write down 3 features of mitochondria which help them carry out respiration. 2. Name the useful substances produced in the Krebs cycle. 3.

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Presentation on theme: "Bell Task 1. Write down 3 features of mitochondria which help them carry out respiration. 2. Name the useful substances produced in the Krebs cycle. 3."— Presentation transcript:

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Bell Task 1. Write down 3 features of mitochondria which help them carry out respiration. 2. Name the useful substances produced in the Krebs cycle. 3. Name the 3 stages of oxidative phosphorylation. 4. Explain the term chemiosmosis.

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Ethanol pathway – not reversible Lactate – can be reversed : liver converts it back to pyruvate or liver oxidises it to carbon dioxide and water Or liver converts it to glycogen Oxygen needed to get rid of lactate = oxygen debt

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Respiratory substrates 1. Name the 3 possible respiratory substrates for cells. 2. Explain why having more H in a substrate increases it’s energy value. 3. Name the substrate with the greatest energy density. 4. Name the piece of apparatus used to determine the energy value of a substrate

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Respirometer Produce a labelled diagram of a respirometer and explain why the following are involved: Soda lime U tube containing fluid. Control tube with glass beads Syringe with a tap (on the control tube)